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连作障碍因素对大豆养分吸收和固氮作用的影响
引用本文:阮维斌,王敬国,张福锁.连作障碍因素对大豆养分吸收和固氮作用的影响[J].生态学报,2003,23(1):22-29.
作者姓名:阮维斌  王敬国  张福锁
作者单位:中国农业大学植物营养系,北京,100094
基金项目:国家重点基础规划研究资助项目 ( G1 9990 1 1 70 9),国家自然基金资助项目 ( 39870 4 88)~~
摘    要:采用分室装置,利用不同孔径的膜研究大豆连作条件下,化感物质、土壤有害生物和大豆胞囊线虫等因素不断累加对植株生长、生物固氮作用和矿质养分吸收和分配的影响。结果表明,随着各因素不断累加,植株的地上部、根系和根瘤干重逐渐降低;除Ca元素外,植株组织的P、K等矿质元素单位含量下降,吸收总量下降,地上部分配的养分比例下降。在化感物质和土壤有害生物因素的基础上接种线虫,对生物固氮和矿质养 分的吸收和分配影响明显。

关 键 词:连作障碍因素  大豆  养分吸收  固氮作用  影响  胞囊线虫  化感作用
文章编号:1000-0933(2003)01-0022-08
收稿时间:2001/11/1 0:00:00
修稿时间:2002/3/23 0:00:00

The effect of continuous cropping factors on soybean seedling growth and nitrogen fixation
RUAN Weibin,WANG Jingguo and ZHANG Fusuo.The effect of continuous cropping factors on soybean seedling growth and nitrogen fixation[J].Acta Ecologica Sinica,2003,23(1):22-29.
Authors:RUAN Weibin  WANG Jingguo and ZHANG Fusuo
Institution:Department of Plant Nutrition; China Agricultural University; Beijing; China
Abstract:Growth of citrus,apple and other fruit trees in replant woodlands may be significantly reduced due to a replant problem and now it has occurred in intensive cropping systems as well.Soybean is a main crop in the north-east part of China.When soybean is cropped continuously in the same field for years,the yield would be reduced by 10%~30% or more.The phenomenon is called soybean continuous cropping problem(SCCP).For easy management,farmers would rather plant soybean year after year than rotate with maize,or ...
Keywords:soybean continuous cropping problem  allelopathy  soybean cyst nematode (Heterodea glycines)  soybean(Glycine max L  )
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